Some time ago (about 2-3 months) I asked for input as to why I would have hard brakes. I received quite a few replys and good advice. Because of many summer commitments and very little time I've finally tackled the problem. Here's the story....I have a Fatman frame, 7" booster below the floor and front disc brakes with rear drums. To sum up, To stop the car one had to really push the pedal and even then it wouldn't screech to a stop...it sort of glided to a stop. I've replaced the residual valves, replaced the proportioning valve with a GM one, and bled the brakes. Now the car stops better, but forget a panic stop. It still sort of glides to a stop, but a little faster. Not enough to suit my needs. I cannot slam the brakes and cause it to skid. The vacuum is 18-20 and the booster is working. What is left to do? I've been told that possibly the MC is plumbed wrong. Possibly the lines should be reversed. However, looking at the MC I see that both reservoirs are the same size. Would this still be a factor as to which line goes to front and rear? Also how does one tell if it's a corvette MC or a Mustang. My MC has ports on both sides and has a rounded end on one end.
Would really appreciate more input.

when troubleshooting brakes i will disconnect the booster and plug the line. it the brakes change then the booster is fine , if not much difference the booster leaks. my 1 ton has brakes from hell on first push then go away. booster leak . good luck .

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